199804780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{1697}}^1$

素因数の和:1771

約数の個数: 72

約数和(自身を含む): 496929888

約数和(自身を除く): 297125108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 841, 1015, 1682, 1697, 2030, 3364, 3394, 4060, 4205, 5887, 6788, 8410, 8485, 11774, 11879, 16820, 16970, 23548, 23758, 29435, 33940, 47516, 49213, 58870, 59395, 98426, 117740, 118790, 196852, 237580, 246065, 344491, 492130, 688982, 984260, 1377964, 1427177, 1722455, 2854354, 3444910, 5708708, 6889820, 7135885, 9990239, 14271770, 19980478, 28543540, 39960956, 49951195, 99902390, 199804780]

約数ペア:

[(1, 199804780), (2, 99902390), (4, 49951195), (5, 39960956), (7, 28543540), (10, 19980478), (14, 14271770), (20, 9990239), (28, 7135885), (29, 6889820), (35, 5708708), (58, 3444910), (70, 2854354), (116, 1722455), (140, 1427177), (145, 1377964), (203, 984260), (290, 688982), (406, 492130), (580, 344491), (812, 246065), (841, 237580), (1015, 196852), (1682, 118790), (1697, 117740), (2030, 98426), (3364, 59395), (3394, 58870), (4060, 49213), (4205, 47516), (5887, 33940), (6788, 29435), (8410, 23758), (8485, 23548), (11774, 16970), (11879, 16820)]